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-rw-r--r--low-can-binding/diagnostic/active-diagnostic-request.cpp194
1 files changed, 194 insertions, 0 deletions
diff --git a/low-can-binding/diagnostic/active-diagnostic-request.cpp b/low-can-binding/diagnostic/active-diagnostic-request.cpp
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+/*
+ * Copyright (C) 2015, 2016 "IoT.bzh"
+ * Author "Romain Forlot" <romain.forlot@iot.bzh>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <map>
+#include <fnmatch.h>
+
+#include "active-diagnostic-request.hpp"
+
+#include "../configuration.hpp"
+
+#define ERROR_PID 0xFF
+
+std::string active_diagnostic_request_t::prefix_ = "diagnostic_messages";
+
+bool active_diagnostic_request_t::operator==(const active_diagnostic_request_t& b)
+{
+ return (bus_ == b.bus_ && id_ == b.id_ && handle_ == b.handle_);
+}
+
+active_diagnostic_request_t& active_diagnostic_request_t::operator=(const active_diagnostic_request_t& adr)
+{
+ if (this != &adr)
+ {
+ bus_ = adr.bus_;
+ id_ = adr.id_;
+ handle_ = adr.handle_;
+ name_ = adr.name_;
+ decoder_ = adr.decoder_;
+ callback_ = adr.callback_;
+ recurring_ = adr.recurring_;
+ wait_for_multiple_responses_ = adr.wait_for_multiple_responses_;
+ in_flight_ = adr.in_flight_;
+ frequency_clock_ = adr.frequency_clock_;
+ timeout_clock_ = adr.timeout_clock_;
+ }
+
+ return *this;
+}
+
+active_diagnostic_request_t::active_diagnostic_request_t()
+ : bus_{nullptr}, id_{0}, handle_{nullptr}, name_{""},
+ decoder_{nullptr}, callback_{nullptr}, recurring_{false}, wait_for_multiple_responses_{false},
+ in_flight_{false}, frequency_clock_{frequency_clock_t()}, timeout_clock_{frequency_clock_t()}
+{}
+
+active_diagnostic_request_t::active_diagnostic_request_t(const std::string& bus, DiagnosticRequest* request,
+ const std::string& name, bool wait_for_multiple_responses, const DiagnosticResponseDecoder decoder,
+ const DiagnosticResponseCallback callback, float frequencyHz)
+ : bus_{bus}, id_{request->arbitration_id}, handle_{nullptr}, name_{name},
+ decoder_{decoder}, callback_{callback}, recurring_{frequencyHz ? true : false}, wait_for_multiple_responses_{wait_for_multiple_responses},
+ in_flight_{false}, frequency_clock_{frequency_clock_t(frequencyHz)}, timeout_clock_{frequency_clock_t(10)}
+{}
+
+uint32_t active_diagnostic_request_t::get_id() const
+{
+ return id_;
+}
+
+const std::shared_ptr<can_bus_dev_t> active_diagnostic_request_t::get_can_bus_dev() const
+{
+ return can_bus_t::get_can_device(bus_);
+}
+
+uint16_t active_diagnostic_request_t::get_pid() const
+{
+ if (handle_->request.has_pid)
+ return handle_->request.pid;
+ return ERROR_PID;
+}
+
+DiagnosticRequestHandle* active_diagnostic_request_t::get_handle()
+{
+ return handle_;
+}
+
+const std::string active_diagnostic_request_t::get_name() const
+{
+ return name_;
+}
+
+std::string& active_diagnostic_request_t::get_prefix()
+{
+ return active_diagnostic_request_t::prefix_;
+}
+
+DiagnosticResponseDecoder& active_diagnostic_request_t::get_decoder()
+{
+ return decoder_;
+}
+
+DiagnosticResponseCallback& active_diagnostic_request_t::get_callback()
+{
+ return callback_;
+}
+
+bool active_diagnostic_request_t::get_recurring() const
+{
+ return recurring_;
+}
+
+bool active_diagnostic_request_t::get_in_flight() const
+{
+ return in_flight_;
+}
+
+frequency_clock_t& active_diagnostic_request_t::get_frequency_clock()
+{
+ return frequency_clock_;
+}
+
+frequency_clock_t& active_diagnostic_request_t::get_timeout_clock()
+{
+ return timeout_clock_;
+}
+
+void active_diagnostic_request_t::set_handle(DiagnosticShims& shims, DiagnosticRequest* request)
+{
+ handle_ = new DiagnosticRequestHandle(generate_diagnostic_request(&shims, request, nullptr));
+}
+
+void active_diagnostic_request_t::set_in_flight(bool val)
+{
+ in_flight_ = val;
+}
+
+///
+/// @brief Check if requested signal name is a diagnostic message. If the name
+/// begin with the diagnostic message prefix then true else false.
+///
+/// @param[in] name - A signal name.
+///
+/// @return true if name began with the diagnostic message prefix else false.
+///
+bool active_diagnostic_request_t::is_diagnostic_signal(const std::string& name)
+{
+ const std::string p = active_diagnostic_request_t::prefix_ + "*";
+ if(::fnmatch(p.c_str(), name.c_str(), FNM_CASEFOLD) == 0)
+ return true;
+ return false;
+}
+
+/// @brief Check is the request should be sent or not
+///
+/// @return true if the request is not running or recurring nor completed,
+/// or it's recurring, its clock elapsed
+/// so it's time to send another one.
+bool active_diagnostic_request_t::should_send()
+{
+ return !in_flight_ && ( (!recurring_ && !request_completed()) ||
+ (recurring_ && frequency_clock_.elapsed(true)) );
+}
+
+/// @brief check if the timeout clock has elapsed
+///
+/// @return true if elapsed, so it is a timeout, else false.
+bool active_diagnostic_request_t::timed_out()
+{
+ // don't use staggered start with the timeout clock
+ return timeout_clock_.elapsed(false);
+}
+
+/// @brief Returns true if a sufficient response has been received for a
+/// diagnostic request.
+///
+/// This is true when at least one response has been received and the request is
+/// configured to not wait for multiple responses. Functional broadcast requests
+/// may often wish to wait the full 100ms for modules to respond.
+bool active_diagnostic_request_t::response_received() const
+{
+ return !wait_for_multiple_responses_ &&
+ handle_->completed;
+}
+
+/// @brief Returns true if the request has timed out waiting for a response,
+/// or a sufficient number of responses has been received.
+bool active_diagnostic_request_t::request_completed()
+{
+ return response_received() ||
+ (timed_out() && diagnostic_request_sent(handle_));
+}